倫 電腦圖學 Week15

利用fprintf 印出 Hello World

#include <stdio.h>

int main(int argc,char**argv)

{

    FILE*fout=NULL;

    fout=fopen("檔名.txt","w+");

    printf("Hello World\n");

    fprintf(fout,"Hello World\n");

}

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#include <stdio.h> int main(int argc,char**argv) { ///FILE*fout=NULL; ///fout=fopen("ÀɦW.txt","w+"); ///printf("Hello World\n"); ///fprintf(fout,"Hello World\n"); FILE*fin=NULL; fin=fopen("檔名.txt","r"); ///scanf("%d",&n); ///scanf("%f",&f); ///scanf("%c",&c); ///scanf("%s",line); char line[100]; fscanf(fin,"%s",line); printf("你讀到了字串: %s\n",line); fscanf(fin,"%s",line); printf("你讀到了字串: %s\n",line); }

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讓茶壺繞著一個點轉動

#include <stdio.h> #include <GL/glut.h> float angle=0,diff=2; void timer(int t) { glutTimerFunc(30,timer,t+1); angle+=diff; if(angle>90)diff=-2; if(angle<0)diff=+2; glutPostRedisplay(); } void display() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(); ///glutSolidTeapot(0.3); glPushMatrix(); glTranslatef(-0.3,0,0); glRotatef(angle,0,0,1); glTranslatef(-0.3,0,0); glutSolidTeapot(0.3); glPushMatrix(); ///glutSolidTeapot(0.3); glPopMatrix(); glPopMatrix(); glPopMatrix(); glutSwapBuffers(); } int main(int argc, char** argv) { glutInit( &argc, argv ); glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH ); glutCreateWindow(" Week15 08160315"); glutTimerFunc(0,timer,0); glutDisplayFunc(display); glutMainLoop(); }

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連接三個一起擺動

#include <stdio.h> #include <GL/glut.h> float angle=0,diff=2; void timer(int t) { glutTimerFunc(30,timer,t+1); angle+=diff; if(angle>90)diff=-2; if(angle<0)diff=+2; glutPostRedisplay(); } void display() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(); glutSolidTeapot(0.3); glPushMatrix(); glTranslatef(-0.3,0,0); glRotatef(angle,0,0,1); glTranslatef(-0.3,0,0); glutSolidTeapot(0.3); glPushMatrix(); glTranslatef(-0.3,0,0); glRotatef(angle,0,0,1); glTranslatef(-0.3,0,0); glutSolidTeapot(0.3); glPopMatrix(); glPopMatrix(); glPopMatrix(); glutSwapBuffers(); } int main(int argc, char** argv) { glutInit( &argc, argv ); glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH ); glutCreateWindow(" Week15 08160315"); glutTimerFunc(0,timer,0); glutDisplayFunc(display); glutMainLoop(); }

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上排 - 按1 只有外面動

下排 - 按0 中間動，外面"被帶動"，但外面沒動

#include <stdio.h>

#include <GL/glut.h>

float angle[20]={},diff=2;

int angleID=0;

void timer(int t)

{

    glutTimerFunc(30,timer,t+1);

    angle[angleID]+=diff;

    if(angle[angleID]>90)diff=-2;

    if(angle[angleID]<0)diff=+2;

    glutPostRedisplay();

}

void keyboard(unsigned char key,int x,int y)

{

    if(key=='1')angleID=1;

    if(key=='0')angleID=0;

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glutSolidTeapot(0.3);

        glPushMatrix();

            glTranslatef(-0.3,0,0);

            glRotatef(angle[0],0,0,1);

            glTranslatef(-0.3,0,0);

            glutSolidTeapot(0.3);

            glPushMatrix();

                glTranslatef(-0.3,0,0);

                glRotatef(angle[1],0,0,1);

                glTranslatef(-0.3,0,0);

                glutSolidTeapot(0.3);

            glPopMatrix();

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week15 file ");

    glutKeyboardFunc(keyboard);

    glutTimerFunc(0,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}

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機器人的雙手

按壓對應數字可控制那處關節!!

#include <stdio.h>///可割可棄

#include <GL/glut.h>

float angle[20]={}, diff=2;///Step05 本來只有1個角度,現在有很多個,初始為0

int angleID=0; ///Step05 現在要改第幾個角度!!!

void timer( int t ){

    glutTimerFunc( 30, timer, t+1 );

    angle[angleID] += diff; ///Step05

    if(angle[angleID]>90) diff=-2; ///Step05

    if(angle[angleID]<0) diff=+2; ///Step05

    glutPostRedisplay();///現在這個比較好, 以前會用 display()重畫

}

void keyboard( unsigned char key, int x, int y){ ///Step05

    if(key=='0') angleID=0; ///Step05

    if(key=='1') angleID=1; ///Step05

    if(key=='2') angleID=2; ///Step05

    if(key=='3') angleID=3; ///Step05

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glutSolidTeapot( 0.3 );///身體

        glPushMatrix();///左半邊

            glTranslatef(-0.3,0,0);///(3)掛在正確的地方

            glRotatef(angle[0], 0,0,1);///(2)旋轉 ///Step05

            glTranslatef(-0.3,0,0);///(1)把關節旋轉中心放到畫面中心

            glutSolidTeapot( 0.3 );///左手臂(沒有重疊)

            glPushMatrix();

                glTranslatef(-0.3,0,0);///(3)掛在正確的地方

                glRotatef(angle[1], 0,0,1);///(2)旋轉 ///Step05

                glTranslatef(-0.3,0,0);///(1)把關節旋轉中心放到畫面中心

                glutSolidTeapot( 0.3 );///左手肘(重疊了)

            glPopMatrix();

        glPopMatrix();

        glPushMatrix();///右半邊

            glTranslatef(+0.3, 0,0 );

            glRotatef(-angle[2], 0,0,1);

            glTranslatef(+0.3, 0,0);

            glutSolidTeapot( 0.3 );///右手臂

            glPushMatrix();

                glTranslatef(+0.3, 0,0 );

                glRotatef(-angle[3], 0,0,1);

                glTranslatef(+0.3, 0,0);

                glutSolidTeapot( 0.3 );///右手肘

            glPopMatrix();

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int main( int argc, char ** argv )

{

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week15 file");

    glutKeyboardFunc(keyboard);///Step05 整合很多關節,會去改angleID

    glutTimerFunc(0, timer, 0);///Step04-2 設第1個timer做動畫

    glutDisplayFunc(display);

    glutMainLoop();

}